Demo

Founding GTM Lead

Mason AI
San Francisco, CA Full Time
POSTED ON 5/31/2026
AVAILABLE BEFORE 11/26/2026

About Mason AI

Mason AI has cracked a research problem that went unsolved for over half a century: how to automatically check blueprints comply with the building codes. The challenge is that over a hundred thousand pages of building codes and referenced standards govern blueprints, and this complexity bottlenecks construction in America.


You will be the first sales hire at an early-stage, AI-native startup brimming with AI talent. Our product is lightyears ahead of the competition, and we need a top-rate Founding GTM lead to convert this technical leadership into a ripping business. You will have a massive impact on the company's future and the country's, as we accelerate American construction. Join us.


About the Role

We’re hiring our founding GTM Lead to build out Mason's full sales cycle and close major deals. You need to be a closer who can also win expansions.


This is a zero-to-one role. You'll build the sales deck, GTM stack, onboarding plan, and objection-handling scripts — all alongside the CEO. Learning comes first: for the first three months, you'll co-sell with the CEO, with a higher base salary while your pipeline ramps. Expect close collaboration with the CEO and our In-House Principal Plan Review Engineer on pricing, distribution, qualification criteria, and messaging.


What You’ll Do

  • We have a small, known universe of prospects who fit our ICP. Very little of your time will be spent on prospecting, and most of your time will be spent on high-touch sales conversations earning trust, including outbound (via warm intros, events, office visits) and closing discovery calls into paying, referenceable customers.
  • Feed insights back into product and GTM. We also want insights on AI tools that eng can build to accelerate you
  • Write down what works and build the first sales playbooks (messaging, objection handling, sequences)
  • As we grow: build a sales team within a year that executes on your playbook. This is a career-defining role and a chance to write your next chapter at an AI-native startup.


What Makes You a Fit

  • You have gone 0->1 with B2B SaaS sales for either a new company or a new product within an existing company.
  • Hunger to win: you care about competing, learning fast, and turning a small wedge into a large account.
  • You must be bought into Mason's vision of transforming how America builds.
  • Enterprise or mid-market experience as an account executive in the SaaS space
  • Building and leading sales teams aligns with your career ambitions.


What Success Looks Like (First 6–12 Months)

  • You close multiple early customers and turn them into strong references
  • You win a six-figure expansion with at least one customer
  • You help recruit new members of your sales org and empower them with a repeatable playbook


Benefits

  • Competitive salary ($180,000 - $250,000 OTE).
  • Generous early-stage equity (0.1%-1%).
  • Delightful snacks and a massage gun at the office.
  • Opportunity to shape the future of our country.


Interview process

We aim to make this happen in 1-2 weeks:

  • Initial call (30 min) - Informal chat on your interests and experience.
  • Mock Discovery Call (45 min) - We’ll send you a link to the product Mason and hypothetical customer time sheets (before and after Mason). You’ll showcase using the product, and we'll have you address common objections.
  • Roadmap Discussion (60 min) - Propose two 60-day roadmaps for building a repeatable sales formula at Mason. We'll share a brain dump of ideas for your consideration. Come prepared with a written brief outlining both roadmaps, a clear recommendation, and we'll discuss it live.
  • Reference checks (3 days) - We'll ask you for two references, and we'll also run a back-channel reference check
  • Reverse interview (90 min; in-person) - The founding team will buy you dinner in San Francisco (commute expenses reimbursed), and you will ask us the questions.
  • Full-time offer 🎉

Salary : $180,000 - $250,000

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